K-85 Heavy-Duty 850mm Remote-Controlled Planetary Concrete Floor Grinder Manufacturer

The Exceptional K-85 Heavy-Duty 850mm Remote-Controlled Planetary Concrete Floor Grinder is designed for contractors who need substantially more grinding width and productivity than compact or medium-sized floor grinders. Its 850 mm working path, four 298 mm tool holders and 27 HP / 20.5 kW three-phase induction motor create a powerful large-format platform for concrete surface preparation, floor renovation, coating removal, surface opening, terrazzo grinding and polishing.

Tool speed is adjustable from 0 to 1,800 rpm, allowing the machine to work across aggressive grinding, surface refinement and polishing stages when paired with suitable diamond tooling. The K-85 can apply up to 425 kg of grinding pressure, providing substantial tool loading for demanding concrete and floor-renovation applications.

Unlike conventional walk-behind grinders, the K-85 includes full-function wireless remote control as standard. Operators can control grinding speed, travel speed, directional movement, deviation correction, S-curve travel and one-key U-turn functions remotely. Eight-direction steering provides additional flexibility when positioning and controlling the machine over large working areas.

The K-85 is built around a three-phase induction main motor, providing a straightforward industrial power architecture for contractors and equipment fleets that prioritize reliable daily grinding performance and relatively simple maintenance. It supports standard three-phase 220 V / 380 V operation, with a 400-480 V high-voltage version also specified for international markets.

For durability under heavy grinding loads, the machine uses a reinforced double-layer gearbox designed for greater structural strength, impact resistance and reduced chatter. A three-oil-seal design improves sealing around the drive system and is intended to reduce oil leakage and routine maintenance requirements.

Large 320 mm travel wheels improve stability and traction during machine movement and are particularly useful in wet or slurry-based floor operations. The machine also provides a 70 mm / 2.76 in vacuum hose port for connection to a compatible external industrial dust extractor and a hose connection for water feed when wet grinding or other water-assisted processes are required.

At 625 kg, the K-85 provides a substantial heavy-duty grinding platform while remaining approximately 20 kg lighter than the premium K-85X.

K-85 or K-85X?

The K-85 and K-85X share the same 850 mm grinding width, four 298 mm tool holders, remote-control functions, 0-1,800 rpm speed range and 425 kg grinding pressure. Their biggest difference is the power system.

The K-85 uses a 27 HP / 20.5 kW three-phase induction main motor and does not include battery backup. The K-85X Full-Servo 850mm Remote-Controlled Planetary Concrete Floor Grinder upgrades to a 28 HP / 21.5 kW full-servo motor and adds battery backup.

Choose the K-85 when large-area productivity, remote control, heavy grinding pressure and a proven induction-drive architecture are the priorities. Consider the K-85X when stable precision at low speeds, full-servo response and battery backup are more important for your applications.

Applications

The K-85 is designed primarily for medium-to-large commercial and industrial floor projects where a wider grinding path and remote operation can improve productivity.

Typical applications include:

• Concrete floor surface preparation
• Concrete surface opening
• Industrial floor renovation
• Epoxy and coating removal
• Cast-in-place concrete slab preparation
• Warehouse floor grinding
• Logistics facility floor renovation
• Commercial flooring refurbishment
• Terrazzo grinding and polishing
• Natural stone grinding
• Wet and slurry-based grinding
• Progressive concrete polishing

The supporting product material specifically positions the K-85 for warehouse grinding, commercial concrete renovation, coating removal, cast-in-place slab surface opening and conventional terrazzo polishing.